250 Contactribg

Anyone know of a good leather repair paint for the gearknob of my RS 250 Silverstone. The paint just seems to have rubbed off! Ideally, I need one that is specifically for Renault as it is a dark grey as opposed to a black. Alternatively, I would buy a new gearknob. I have looked around, but can't seem to locate one, especially as it has yellow stitching. Thanks in advance.